/brz/remove-bazaar

# Copyright (C) 2005, 2006 Canonical Ltd

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

"""Tests for InterRepository implementastions."""

import sys

import bzrlib

import bzrlib.bzrdir as bzrdir

from bzrlib.branch import Branch, needs_read_lock, needs_write_lock

import bzrlib.errors as errors

from bzrlib.errors import (FileExists,

                           NoSuchRevision,

                           NoSuchFile,

                           UninitializableFormat,

                           NotBranchError,

                           )

from bzrlib.inventory import Inventory

import bzrlib.repofmt.weaverepo as weaverepo

import bzrlib.repository as repository

from bzrlib.revision import NULL_REVISION, Revision

from bzrlib.tests import (

    TestCase,

    TestCaseWithTransport,

    TestNotApplicable,

    TestSkipped,

    )

from bzrlib.tests.bzrdir_implementations.test_bzrdir import TestCaseWithBzrDir

from bzrlib.transport import get_transport

class TestCaseWithInterRepository(TestCaseWithBzrDir):

    def setUp(self):

        super(TestCaseWithInterRepository, self).setUp()

    def make_branch(self, relpath, format=None):

        repo = self.make_repository(relpath, format=format)

        return repo.bzrdir.create_branch()

    def make_bzrdir(self, relpath, format=None):

        try:

            url = self.get_url(relpath)

            segments = url.split('/')

            if segments and segments[-1] not in ('', '.'):

                parent = '/'.join(segments[:-1])

                t = get_transport(parent)

                try:

                    t.mkdir(segments[-1])

                except FileExists:

                    pass

            if format is None:

                format = self.repository_format._matchingbzrdir

            return format.initialize(url)

        except UninitializableFormat:

            raise TestSkipped("Format %s is not initializable." % format)

    def make_repository(self, relpath, format=None):

        made_control = self.make_bzrdir(relpath, format=format)

        return self.repository_format.initialize(made_control)

    def make_to_repository(self, relpath):

        made_control = self.make_bzrdir(relpath,

            self.repository_format_to._matchingbzrdir)

        return self.repository_format_to.initialize(made_control)

def check_old_format_lock_error(repository_format):

    """Potentially ignore LockError on old formats.

    On win32, with the old OS locks, we get a failure of double-lock when

    we open a object in 2 objects and try to lock both.

    On new formats, LockError would be invalid, but for old formats

    this was not supported on Win32.

    """

    if sys.platform != 'win32':

        raise

    description = repository_format.get_format_description()

    if description in ("Repository format 4",

                       "Weave repository format 5",

                       "Weave repository format 6"):

        # jam 20060701

        # win32 OS locks are not re-entrant. So one process cannot

        # open the same repository twice and lock them both.

        raise TestSkipped('%s on win32 cannot open the same'

                          ' repository twice in different objects'

                          % description)

    raise

def check_repo_format_for_funky_id_on_win32(repo):

    if (isinstance(repo, (weaverepo.AllInOneRepository,

                          weaverepo.WeaveMetaDirRepository))

        and sys.platform == 'win32'):

            raise TestSkipped("funky chars does not permitted"

                              " on this platform in repository"

                              " %s" % repo.__class__.__name__)

class TestInterRepository(TestCaseWithInterRepository):

    def test_interrepository_get_returns_correct_optimiser(self):

        # we assume the optimising code paths are triggered

        # by the type of the repo not the transport - at this point.

        # we may need to update this test if this changes.

        #

        # XXX: This code tests that we get an InterRepository when we try to

        # convert between the two repositories that it wants to be tested with

        # -- but that's not necessarily correct.  So for now this is disabled.

        # mbp 20070206

        ## source_repo = self.make_repository("source")

        ## target_repo = self.make_to_repository("target")

        ## interrepo = repository.InterRepository.get(source_repo, target_repo)

        ## self.assertEqual(self.interrepo_class, interrepo.__class__)

        pass

    def test_fetch(self):

        tree_a = self.make_branch_and_tree('a')

        self.build_tree(['a/foo'])

        tree_a.add('foo', 'file1')

        tree_a.commit('rev1', rev_id='rev1')

        def check_push_rev1(repo):

            # ensure the revision is missing.

            self.assertRaises(NoSuchRevision, repo.get_revision, 'rev1')

            # fetch with a limit of NULL_REVISION and an explicit progress bar.

            repo.fetch(tree_a.branch.repository,

                       revision_id=NULL_REVISION,

                       pb=bzrlib.progress.DummyProgress())

            # nothing should have been pushed

            self.assertFalse(repo.has_revision('rev1'))

            # fetch with a default limit (grab everything)

            repo.fetch(tree_a.branch.repository)

            # check that b now has all the data from a's first commit.

            rev = repo.get_revision('rev1')

            tree = repo.revision_tree('rev1')

            tree.lock_read()

            self.addCleanup(tree.unlock)

            tree.get_file_text('file1')

            for file_id in tree:

                if tree.inventory[file_id].kind == "file":

                    tree.get_file(file_id).read()

        # makes a target version repo 

        repo_b = self.make_to_repository('b')

        check_push_rev1(repo_b)

    def test_fetch_missing_basis_text(self):

        """If fetching a delta, we should die if a basis is not present."""

        tree = self.make_branch_and_tree('tree')

        self.build_tree(['tree/a'])

        tree.add(['a'], ['a-id'])

        tree.commit('one', rev_id='rev-one')

        self.build_tree_contents([('tree/a', 'new contents\n')])

        tree.commit('two', rev_id='rev-two')

        to_repo = self.make_to_repository('to_repo')

        # We build a broken revision so that we can test the fetch code dies

        # properly. So copy the inventory and revision, but not the text.

        to_repo.lock_write()

        try:

            to_repo.start_write_group()

            inv = tree.branch.repository.get_inventory('rev-one')

            to_repo.add_inventory('rev-one', inv, [])

            rev = tree.branch.repository.get_revision('rev-one')

            to_repo.add_revision('rev-one', rev, inv=inv)

            to_repo.commit_write_group()

        finally:

            to_repo.unlock()

        # Implementations can either copy the missing basis text, or raise an

        # exception

        try:

            to_repo.fetch(tree.branch.repository, 'rev-two')

        except errors.RevisionNotPresent, e:

            # If an exception is raised, the revision should not be in the

            # target.

            self.assertRaises((errors.NoSuchRevision, errors.RevisionNotPresent),

                              to_repo.revision_tree, 'rev-two')

        else:

            # If not exception is raised, then the basis text should be

            # available.

            to_repo.lock_read()

            try:

                rt = to_repo.revision_tree('rev-one')

                self.assertEqual('contents of tree/a\n',

                                 rt.get_file_text('a-id'))

            finally:

                to_repo.unlock()

    def test_fetch_missing_revision_same_location_fails(self):

        repo_a = self.make_repository('.')

        repo_b = repository.Repository.open('.')

        try:

            self.assertRaises(errors.NoSuchRevision, repo_b.fetch, repo_a, revision_id='XXX')

        except errors.LockError, e:

            check_old_format_lock_error(self.repository_format)

    def test_fetch_same_location_trivial_works(self):

        repo_a = self.make_repository('.')

        repo_b = repository.Repository.open('.')

        try:

            repo_a.fetch(repo_b)

        except errors.LockError, e:

            check_old_format_lock_error(self.repository_format)

    def test_fetch_missing_text_other_location_fails(self):

        source_tree = self.make_branch_and_tree('source')

        source = source_tree.branch.repository

        target = self.make_to_repository('target')

        # start by adding a file so the data knit for the file exists in

        # repositories that have specific files for each fileid.

        self.build_tree(['source/id'])

        source_tree.add(['id'], ['id'])

        source_tree.commit('a', rev_id='a')

        # now we manually insert a revision with an inventory referencing

        # 'id' at revision 'b', but we do not insert revision b.

        # this should ensure that the new versions of files are being checked

        # for during pull operations

        inv = source.get_inventory('a')

        source.lock_write()

        source.start_write_group()

        inv['id'].revision = 'b'

        inv.revision_id = 'b'

        sha1 = source.add_inventory('b', inv, ['a'])

        rev = Revision(timestamp=0,

                       timezone=None,

                       committer="Foo Bar <foo@example.com>",

                       message="Message",

                       inventory_sha1=sha1,

                       revision_id='b')

        rev.parent_ids = ['a']

        source.add_revision('b', rev)

        source.commit_write_group()

        source.unlock()

        self.assertRaises(errors.RevisionNotPresent, target.fetch, source)

        self.assertFalse(target.has_revision('b'))

    def test_fetch_funky_file_id(self):

        from_tree = self.make_branch_and_tree('tree')

        if sys.platform == 'win32':

            from_repo = from_tree.branch.repository

            check_repo_format_for_funky_id_on_win32(from_repo)

        self.build_tree(['tree/filename'])

        from_tree.add('filename', 'funky-chars<>%&;"\'')

        from_tree.commit('commit filename')

        to_repo = self.make_to_repository('to')

        to_repo.fetch(from_tree.branch.repository, from_tree.get_parent_ids()[0])

    def test_fetch_no_inventory_revision(self):

        """Old inventories lack revision_ids, so simulate this"""

        from_tree = self.make_branch_and_tree('tree')

        if sys.platform == 'win32':

            from_repo = from_tree.branch.repository

            check_repo_format_for_funky_id_on_win32(from_repo)

        self.build_tree(['tree/filename'])

        from_tree.add('filename', 'funky-chars<>%&;"\'')

        from_tree.commit('commit filename')

        old_deserialise = from_tree.branch.repository.deserialise_inventory

        def deserialise(revision_id, text):

            inventory = old_deserialise(revision_id, text)

            inventory.revision_id = None

            return inventory

        from_tree.branch.repository.deserialise_inventory = deserialise

        to_repo = self.make_to_repository('to')

        to_repo.fetch(from_tree.branch.repository, from_tree.last_revision())

class TestCaseWithComplexRepository(TestCaseWithInterRepository):

    def setUp(self):

        super(TestCaseWithComplexRepository, self).setUp()

        tree_a = self.make_branch_and_tree('a')

        self.bzrdir = tree_a.branch.bzrdir

        # add a corrupt inventory 'orphan'

        tree_a.branch.repository.lock_write()

        tree_a.branch.repository.start_write_group()

        inv_file = tree_a.branch.repository.get_inventory_weave()

        inv_file.add_lines('orphan', [], [])

        tree_a.branch.repository.commit_write_group()

        tree_a.branch.repository.unlock()

        # add a real revision 'rev1'

        tree_a.commit('rev1', rev_id='rev1', allow_pointless=True)

        # add a real revision 'rev2' based on rev1

        tree_a.commit('rev2', rev_id='rev2', allow_pointless=True)

        # and sign 'rev2'

        tree_a.branch.repository.lock_write()

        tree_a.branch.repository.start_write_group()

        tree_a.branch.repository.sign_revision('rev2', bzrlib.gpg.LoopbackGPGStrategy(None))

        tree_a.branch.repository.commit_write_group()

        tree_a.branch.repository.unlock()

    def test_missing_revision_ids(self):

        # revision ids in repository A but not B are returned, fake ones

        # are stripped. (fake meaning no revision object, but an inventory 

        # as some formats keyed off inventory data in the past.)

        # make a repository to compare against that claims to have rev1

        repo_b = self.make_to_repository('rev1_only')

        repo_a = self.bzrdir.open_repository()

        repo_b.fetch(repo_a, 'rev1')

        # check the test will be valid

        self.assertFalse(repo_b.has_revision('rev2'))

        self.assertEqual(['rev2'],

                         repo_b.missing_revision_ids(repo_a))

    def test_missing_revision_ids_absent_requested_raises(self):

        # Asking for missing revisions with a tip that is itself absent in the

        # source raises NoSuchRevision.

        repo_b = self.make_to_repository('target')

        repo_a = self.bzrdir.open_repository()

        # No pizza revisions anywhere

        self.assertFalse(repo_a.has_revision('pizza'))

        self.assertFalse(repo_b.has_revision('pizza'))

        # Asking specifically for an absent revision errors.

        self.assertRaises(NoSuchRevision, repo_b.missing_revision_ids, repo_a,

            revision_id='pizza', find_ghosts=True)

        self.assertRaises(NoSuchRevision, repo_b.missing_revision_ids, repo_a,

            revision_id='pizza', find_ghosts=False)

    def test_missing_revision_ids_revision_limited(self):

        # revision ids in repository A that are not referenced by the

        # requested revision are not returned.

        # make a repository to compare against that is empty

        repo_b = self.make_to_repository('empty')

        repo_a = self.bzrdir.open_repository()

        self.assertEqual(['rev1'],

                         repo_b.missing_revision_ids(repo_a, revision_id='rev1'))

    def test_fetch_fetches_signatures_too(self):

        from_repo = self.bzrdir.open_repository()

        from_signature = from_repo.get_signature_text('rev2')

        to_repo = self.make_to_repository('target')

        to_repo.fetch(from_repo)

        to_signature = to_repo.get_signature_text('rev2')

        self.assertEqual(from_signature, to_signature)

class TestCaseWithGhosts(TestCaseWithInterRepository):

    def test_fetch_all_fixes_up_ghost(self):

        # we want two repositories at this point:

        # one with a revision that is a ghost in the other

        # repository.

        # 'ghost' is present in has_ghost, 'ghost' is absent in 'missing_ghost'.

        # 'references' is present in both repositories, and 'tip' is present

        # just in has_ghost.

        # has_ghost       missing_ghost

        #------------------------------

        # 'ghost'             -

        # 'references'    'references'

        # 'tip'               -

        # In this test we fetch 'tip' which should not fetch 'ghost'

        has_ghost = self.make_repository('has_ghost')

        missing_ghost = self.make_repository('missing_ghost')

        if [True, True] != [repo._format.supports_ghosts for repo in

            (has_ghost, missing_ghost)]:

            raise TestNotApplicable("Need ghost support.")

        def add_commit(repo, revision_id, parent_ids):

            repo.lock_write()

            repo.start_write_group()

            inv = Inventory(revision_id=revision_id)

            inv.root.revision = revision_id

            root_id = inv.root.file_id

            sha1 = repo.add_inventory(revision_id, inv, parent_ids)

            vf = repo.weave_store.get_weave_or_empty(root_id,

                repo.get_transaction())

            vf.add_lines(revision_id, [], [])

            rev = bzrlib.revision.Revision(timestamp=0,

                                           timezone=None,

                                           committer="Foo Bar <foo@example.com>",

                                           message="Message",

                                           inventory_sha1=sha1,

                                           revision_id=revision_id)

            rev.parent_ids = parent_ids

            repo.add_revision(revision_id, rev)

            repo.commit_write_group()

            repo.unlock()

        add_commit(has_ghost, 'ghost', [])

        add_commit(has_ghost, 'references', ['ghost'])

        add_commit(missing_ghost, 'references', ['ghost'])

        add_commit(has_ghost, 'tip', ['references'])

        missing_ghost.fetch(has_ghost, 'tip', find_ghosts=True)

        # missing ghost now has tip and ghost.

        rev = missing_ghost.get_revision('tip')

        inv = missing_ghost.get_inventory('tip')

        rev = missing_ghost.get_revision('ghost')

        inv = missing_ghost.get_inventory('ghost')

        # rev must not be corrupt now

        self.assertEqual([None, 'ghost', 'references', 'tip'],

            missing_ghost.get_ancestry('tip'))

class TestFetchDependentData(TestCaseWithInterRepository):

    def test_reference(self):

        from_tree = self.make_branch_and_tree('tree')

        to_repo = self.make_to_repository('to')

        if (not from_tree.supports_tree_reference() or

            not from_tree.branch.repository._format.supports_tree_reference or

            not to_repo._format.supports_tree_reference):

            raise TestNotApplicable("Need subtree support.")

        subtree = self.make_branch_and_tree('tree/subtree')

        subtree.commit('subrev 1')

        from_tree.add_reference(subtree)

        tree_rev = from_tree.commit('foo')

        # now from_tree has a last-modified of subtree of the rev id of the

        # commit for foo, and a reference revision of the rev id of the commit

        # for subrev 1

        to_repo.fetch(from_tree.branch.repository, tree_rev)

        # to_repo should have a file_graph for from_tree.path2id('subtree') and

        # revid tree_rev.

        to_repo.lock_read()

        try:

            file_vf = to_repo.weave_store.get_weave(

                from_tree.path2id('subtree'), to_repo.get_transaction())

            self.assertEqual([tree_rev], file_vf.get_ancestry([tree_rev]))

        finally:

            to_repo.unlock()